By seamlessly integrating an FM transmitter and car power adapter, TuneBase FM provides an exceptional, all-in-one solution on the road. Improved FM transmission delivers crisp, clean audio performance in your car. A built-in transmitter wirelessly connects to your car stereo on multiple FM channels, from 88.1MHz-107.9MHz. Featuring four programmable memory slots that let you easily toggle for the best performance, TuneBase FM easily ensures you access to the best available frequency. The holder secures your iPod and features an innovative, flexible-steel neck for easy repositioning. The package includes tray adapters to fit iPod video, 4G, photo, mini, and nano.